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<a name="1" href="#1">1</a>   <em class="jxr_comment">/*</em>
<a name="2" href="#2">2</a>   <em class="jxr_comment"> * Licensed to the Apache Software Foundation (ASF) under one or more</em>
<a name="3" href="#3">3</a>   <em class="jxr_comment"> * contributor license agreements.  See the NOTICE file distributed with</em>
<a name="4" href="#4">4</a>   <em class="jxr_comment"> * this work for additional information regarding copyright ownership.</em>
<a name="5" href="#5">5</a>   <em class="jxr_comment"> * The ASF licenses this file to You under the Apache License, Version 2.0</em>
<a name="6" href="#6">6</a>   <em class="jxr_comment"> * (the "License"); you may not use this file except in compliance with</em>
<a name="7" href="#7">7</a>   <em class="jxr_comment"> * the License.  You may obtain a copy of the License at</em>
<a name="8" href="#8">8</a>   <em class="jxr_comment"> * </em>
<a name="9" href="#9">9</a>   <em class="jxr_comment"> *      <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
<a name="10" href="#10">10</a>  <em class="jxr_comment"> * </em>
<a name="11" href="#11">11</a>  <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing, software</em>
<a name="12" href="#12">12</a>  <em class="jxr_comment"> * distributed under the License is distributed on an "AS IS" BASIS,</em>
<a name="13" href="#13">13</a>  <em class="jxr_comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em>
<a name="14" href="#14">14</a>  <em class="jxr_comment"> * See the License for the specific language governing permissions and</em>
<a name="15" href="#15">15</a>  <em class="jxr_comment"> * limitations under the License.</em>
<a name="16" href="#16">16</a>  <em class="jxr_comment"> */</em> 
<a name="17" href="#17">17</a>  
<a name="18" href="#18">18</a>  <strong class="jxr_keyword">package</strong> org.apache.commons.logging.tccl.logfactory;
<a name="19" href="#19">19</a>  
<a name="20" href="#20">20</a>  
<a name="21" href="#21">21</a>  <strong class="jxr_keyword">import</strong> java.net.URL;
<a name="22" href="#22">22</a>  
<a name="23" href="#23">23</a>  <strong class="jxr_keyword">import</strong> junit.framework.Test;
<a name="24" href="#24">24</a>  <strong class="jxr_keyword">import</strong> junit.framework.TestCase;
<a name="25" href="#25">25</a>  
<a name="26" href="#26">26</a>  <strong class="jxr_keyword">import</strong> org.apache.commons.logging.LogFactory;
<a name="27" href="#27">27</a>  <strong class="jxr_keyword">import</strong> org.apache.commons.logging.PathableClassLoader;
<a name="28" href="#28">28</a>  <strong class="jxr_keyword">import</strong> org.apache.commons.logging.PathableTestSuite;
<a name="29" href="#29">29</a>  
<a name="30" href="#30">30</a>  
<a name="31" href="#31">31</a>  <em class="jxr_javadoccomment">/**</em>
<a name="32" href="#32">32</a>  <em class="jxr_javadoccomment"> * Verify that by default a custom LogFactoryImpl is loaded from the</em>
<a name="33" href="#33">33</a>  <em class="jxr_javadoccomment"> * tccl classloader.</em>
<a name="34" href="#34">34</a>  <em class="jxr_javadoccomment"> */</em>
<a name="35" href="#35">35</a>  
<a name="36" href="#36">36</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../org/apache/commons/logging/tccl/logfactory/TcclEnabledTestCase.html">TcclEnabledTestCase</a> <strong class="jxr_keyword">extends</strong> TestCase {
<a name="37" href="#37">37</a>  
<a name="38" href="#38">38</a>      <em class="jxr_comment">// ------------------------------------------- JUnit Infrastructure Methods</em>
<a name="39" href="#39">39</a>  
<a name="40" href="#40">40</a>  
<a name="41" href="#41">41</a>      <em class="jxr_javadoccomment">/**</em>
<a name="42" href="#42">42</a>  <em class="jxr_javadoccomment">     * Return the tests included in this test suite.</em>
<a name="43" href="#43">43</a>  <em class="jxr_javadoccomment">     */</em>
<a name="44" href="#44">44</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> Test suite() <strong class="jxr_keyword">throws</strong> Exception {
<a name="45" href="#45">45</a>          Class thisClass = TcclEnabledTestCase.<strong class="jxr_keyword">class</strong>;
<a name="46" href="#46">46</a>  
<a name="47" href="#47">47</a>          <em class="jxr_comment">// Determine the URL to this .class file, so that we can then</em>
<a name="48" href="#48">48</a>          <em class="jxr_comment">// append the priority dirs to it. For tidiness, load this</em>
<a name="49" href="#49">49</a>          <em class="jxr_comment">// class through a dummy loader though this is not absolutely</em>
<a name="50" href="#50">50</a>          <em class="jxr_comment">// necessary...</em>
<a name="51" href="#51">51</a>          <a href="../../../../../../org/apache/commons/logging/PathableClassLoader.html">PathableClassLoader</a> dummy = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/apache/commons/logging/PathableClassLoader.html">PathableClassLoader</a>(<strong class="jxr_keyword">null</strong>);
<a name="52" href="#52">52</a>          dummy.useExplicitLoader(<span class="jxr_string">"junit."</span>, Test.<strong class="jxr_keyword">class</strong>.getClassLoader());
<a name="53" href="#53">53</a>          dummy.addLogicalLib(<span class="jxr_string">"testclasses"</span>);
<a name="54" href="#54">54</a>          dummy.addLogicalLib(<span class="jxr_string">"commons-logging"</span>);
<a name="55" href="#55">55</a>          
<a name="56" href="#56">56</a>          String thisClassPath = thisClass.getName().replace('.', '/') + <span class="jxr_string">".class"</span>;
<a name="57" href="#57">57</a>          URL baseUrl = dummy.findResource(thisClassPath);
<a name="58" href="#58">58</a>  
<a name="59" href="#59">59</a>          <em class="jxr_comment">// Now set up the desired classloader hierarchy. Everything goes into</em>
<a name="60" href="#60">60</a>          <em class="jxr_comment">// the parent classpath, but we exclude the custom LogFactoryImpl</em>
<a name="61" href="#61">61</a>          <em class="jxr_comment">// class.</em>
<a name="62" href="#62">62</a>          <em class="jxr_comment">//</em>
<a name="63" href="#63">63</a>          <em class="jxr_comment">// We then create a tccl classloader that can see the custom</em>
<a name="64" href="#64">64</a>          <em class="jxr_comment">// LogFactory class. Therefore if that class can be found, then the</em>
<a name="65" href="#65">65</a>          <em class="jxr_comment">// TCCL must have been used to load it.</em>
<a name="66" href="#66">66</a>          <a href="../../../../../../org/apache/commons/logging/PathableClassLoader.html">PathableClassLoader</a> emptyLoader = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/apache/commons/logging/PathableClassLoader.html">PathableClassLoader</a>(<strong class="jxr_keyword">null</strong>);
<a name="67" href="#67">67</a>          
<a name="68" href="#68">68</a>          <a href="../../../../../../org/apache/commons/logging/PathableClassLoader.html">PathableClassLoader</a> parentLoader = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/apache/commons/logging/PathableClassLoader.html">PathableClassLoader</a>(<strong class="jxr_keyword">null</strong>);
<a name="69" href="#69">69</a>          parentLoader.useExplicitLoader(<span class="jxr_string">"junit."</span>, Test.<strong class="jxr_keyword">class</strong>.getClassLoader());
<a name="70" href="#70">70</a>          parentLoader.addLogicalLib(<span class="jxr_string">"commons-logging"</span>);
<a name="71" href="#71">71</a>          parentLoader.addLogicalLib(<span class="jxr_string">"testclasses"</span>);
<a name="72" href="#72">72</a>          <em class="jxr_comment">// hack to ensure that the testcase classloader can't see</em>
<a name="73" href="#73">73</a>          <em class="jxr_comment">// the cust MyLogFactoryImpl</em>
<a name="74" href="#74">74</a>          parentLoader.useExplicitLoader(
<a name="75" href="#75">75</a>              <span class="jxr_string">"org.apache.commons.logging.tccl.custom."</span>, emptyLoader);
<a name="76" href="#76">76</a>          
<a name="77" href="#77">77</a>          URL propsEnableUrl = <strong class="jxr_keyword">new</strong> URL(baseUrl, <span class="jxr_string">"props_enable_tccl/"</span>);
<a name="78" href="#78">78</a>          parentLoader.addURL(propsEnableUrl);
<a name="79" href="#79">79</a>  
<a name="80" href="#80">80</a>          <a href="../../../../../../org/apache/commons/logging/PathableClassLoader.html">PathableClassLoader</a> tcclLoader = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/apache/commons/logging/PathableClassLoader.html">PathableClassLoader</a>(parentLoader);
<a name="81" href="#81">81</a>          tcclLoader.addLogicalLib(<span class="jxr_string">"testclasses"</span>);
<a name="82" href="#82">82</a>  
<a name="83" href="#83">83</a>          Class testClass = parentLoader.loadClass(thisClass.getName());
<a name="84" href="#84">84</a>          <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/apache/commons/logging/PathableTestSuite.html">PathableTestSuite</a>(testClass, tcclLoader);
<a name="85" href="#85">85</a>      }
<a name="86" href="#86">86</a>  
<a name="87" href="#87">87</a>      <em class="jxr_javadoccomment">/**</em>
<a name="88" href="#88">88</a>  <em class="jxr_javadoccomment">     * Set up instance variables required by this test case.</em>
<a name="89" href="#89">89</a>  <em class="jxr_javadoccomment">     */</em>
<a name="90" href="#90">90</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> setUp() <strong class="jxr_keyword">throws</strong> Exception {
<a name="91" href="#91">91</a>          LogFactory.releaseAll();
<a name="92" href="#92">92</a>      }
<a name="93" href="#93">93</a>  
<a name="94" href="#94">94</a>      <em class="jxr_javadoccomment">/**</em>
<a name="95" href="#95">95</a>  <em class="jxr_javadoccomment">     * Tear down instance variables required by this test case.</em>
<a name="96" href="#96">96</a>  <em class="jxr_javadoccomment">     */</em>
<a name="97" href="#97">97</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> tearDown() {
<a name="98" href="#98">98</a>          LogFactory.releaseAll();
<a name="99" href="#99">99</a>      }
<a name="100" href="#100">100</a> 
<a name="101" href="#101">101</a>     <em class="jxr_comment">// ----------------------------------------------------------- Test Methods</em>
<a name="102" href="#102">102</a> 
<a name="103" href="#103">103</a>     <em class="jxr_javadoccomment">/**</em>
<a name="104" href="#104">104</a> <em class="jxr_javadoccomment">     * Verify that MyLogFactoryImpl is only loadable via the tccl.</em>
<a name="105" href="#105">105</a> <em class="jxr_javadoccomment">     */</em>
<a name="106" href="#106">106</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> testLoader() <strong class="jxr_keyword">throws</strong> Exception {
<a name="107" href="#107">107</a>         
<a name="108" href="#108">108</a>         ClassLoader thisClassLoader = <strong class="jxr_keyword">this</strong>.getClass().getClassLoader();
<a name="109" href="#109">109</a>         ClassLoader tcclLoader = Thread.currentThread().getContextClassLoader();
<a name="110" href="#110">110</a> 
<a name="111" href="#111">111</a>         <em class="jxr_comment">// the tccl loader should NOT be the same as the loader that loaded this test class.</em>
<a name="112" href="#112">112</a>         assertNotSame(<span class="jxr_string">"tccl not same as test classloader"</span>, thisClassLoader, tcclLoader);
<a name="113" href="#113">113</a> 
<a name="114" href="#114">114</a>         <em class="jxr_comment">// MyLogFactoryImpl should not be loadable via parent loader</em>
<a name="115" href="#115">115</a>         <strong class="jxr_keyword">try</strong> {
<a name="116" href="#116">116</a>             Class clazz = thisClassLoader.loadClass(
<a name="117" href="#117">117</a>                 <span class="jxr_string">"org.apache.commons.logging.tccl.custom.MyLogFactoryImpl"</span>);
<a name="118" href="#118">118</a>             fail(<span class="jxr_string">"Unexpectedly able to load MyLogFactoryImpl via test class classloader"</span>);
<a name="119" href="#119">119</a>             assertNotNull(clazz); <em class="jxr_comment">// silence warning about unused var</em>
<a name="120" href="#120">120</a>         } <strong class="jxr_keyword">catch</strong>(ClassNotFoundException ex) {
<a name="121" href="#121">121</a>             <em class="jxr_comment">// ok, expected</em>
<a name="122" href="#122">122</a>         }
<a name="123" href="#123">123</a>         
<a name="124" href="#124">124</a>         <em class="jxr_comment">// MyLogFactoryImpl should be loadable via tccl loader</em>
<a name="125" href="#125">125</a>         <strong class="jxr_keyword">try</strong> {
<a name="126" href="#126">126</a>             Class clazz = tcclLoader.loadClass(
<a name="127" href="#127">127</a>                 <span class="jxr_string">"org.apache.commons.logging.tccl.custom.MyLogFactoryImpl"</span>);
<a name="128" href="#128">128</a>             assertNotNull(clazz);
<a name="129" href="#129">129</a>         } <strong class="jxr_keyword">catch</strong>(ClassNotFoundException ex) {
<a name="130" href="#130">130</a>             fail(<span class="jxr_string">"Unexpectedly unable to load MyLogFactoryImpl via tccl classloader"</span>);
<a name="131" href="#131">131</a>         }
<a name="132" href="#132">132</a>     }
<a name="133" href="#133">133</a> 
<a name="134" href="#134">134</a>     <em class="jxr_javadoccomment">/**</em>
<a name="135" href="#135">135</a> <em class="jxr_javadoccomment">     * Verify that the custom LogFactory implementation which is only accessable</em>
<a name="136" href="#136">136</a> <em class="jxr_javadoccomment">     * via the TCCL has successfully been loaded as specified in the config file.</em>
<a name="137" href="#137">137</a> <em class="jxr_javadoccomment">     * This proves that the TCCL was used to load that class.</em>
<a name="138" href="#138">138</a> <em class="jxr_javadoccomment">     */</em>
<a name="139" href="#139">139</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> testTcclLoading() <strong class="jxr_keyword">throws</strong> Exception {
<a name="140" href="#140">140</a>         LogFactory instance = LogFactory.getFactory();
<a name="141" href="#141">141</a>         
<a name="142" href="#142">142</a>         assertEquals(
<a name="143" href="#143">143</a>             <span class="jxr_string">"Correct LogFactory loaded"</span>, 
<a name="144" href="#144">144</a>             <span class="jxr_string">"org.apache.commons.logging.tccl.custom.MyLogFactoryImpl"</span>,
<a name="145" href="#145">145</a>             instance.getClass().getName());
<a name="146" href="#146">146</a>     }
<a name="147" href="#147">147</a> }
</pre>
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